Finding the Fourth Proportional to 1,066.39, 1,470.79 and 693.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.39 : 1,470.79 = 693.49 : x
2. Step 2: Convert to fraction form
   1,066.39/1,470.79 = 693.49/x
3. Step 3: Cross multiply
   1,066.39x = 1,470.79 × 693.49
4. Step 4: Simplify right side
   1,066.39x = 1,019,974.69
5. Step 5: Solve for x
   x = 1,019,974.69/1,066.39
6. Step 6: Final answer
   x = 956.47